Engine Specific Info and Questions > IDI Engine
Injector rubber nipple
Spokerider:
I had the little rubber nipple come off while driving the aaz the other day, By the time I realized there was a fuel leak, like 30 seconds...., the whole engine was bathed in diesel. What a mess. That was a brand new nipple the vw stealership charged me $6 for. I figure thats about $600 per lb for those caps....... ::)
Anyway, I don't want a repeat of that fuel leak. I don't trust the ribber caps now.
What about doing away with the rubber cap altogether? Why not run a plastic T in the first fuel return hose going to the second injector, and with a short piece of hose, connect the nipple that had the cap on it, to the short hose, and connect it to the T......essentially tying both nipples from injector number one, to the second injector. Any reason why this would not work?
Also.....does return-line fuel pressure go up with engine / pump rpm? Or is it at a constant pressure?
Thanks for your thots.
libbydiesel:
If everything is correct, there is no pressure at all in the return line or the little jumpers between injectors. The only issue I can think of to cause pressure in any of those lines is a blockage in the line.
ORCoaster:
No reason It wouldn't work. I run a tee between the hose from the first nipple on the #1 injector to the far nipple on the #4 cylinder and then from that tee send the fuel to the Out bolt. I put small width Zip ties on the tee and hose connections. Just takes a tee and a longer piece of hose to get from #4 to somewhere near #2 or 3.
Spokerider:
Thanks for the replies guys.
The fuel return leaving the pump seems to go back to the tank without any obstructing problem. All new inj. bleeding hoses installed too.
I have my spare rubber cap on the nipple now. Also used a small zip tie at the base of the rubber cap......if it lets go, I'll do a "T" mod. Hope it won't let go, as it was one heck of a mess!
ORCoaster:
I find it odd that much fuel is excess to what it takes to fire the cylinder. If one is off it does seem to pour all over the place and takes forever to clean it up.
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